Doctor insights on:
Morning After Pill On Ovulation

1

Up to 95%:
If a woman takes the morning after pill within 24 hours of intercourse it is up to 95% effective. If she takes it within 72 hours of intercourse it is up to 89% effective. The sooner after intercourse the pill is taken the more effective it is, even during ovulation time. However being on bcp or Implanon or iud is even more effective, so it's helpful to consider a from of birth control.
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Emergency contraception is the method a woman can use to avoid getting pregnant, after she has received sperm in her vagina. She takes the hormone pills, which are usually larger doses of hormones used in oral birth control pills, within a short time (days) after her sexual activity, to prevent becoming pregnant.
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3

It depends!:
The effectiveness of the morning after pill is related to a delay in ovulation produced by the burst of Progesterone that you get from this medication. I would say, in general, that I would not expect it to delay your cycle for more than 1-2 weeks. How long it delays ovulation is similar, but likely depends on whether you took it before, or after you ovulated. Remember to take a pregnancy test!
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4

Yes:
The morning after pill is a hormone pill and it can mess up your ovulation. What you are describing is not unusual. If you needed to use this that frequently, it is time to consider an effective method of birth control such as pills or an iud.
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5

Unknown/unknown:
Depending on the timing and type of pill, this may or may not prevent ovulation.If it does the reset period is unknown. It does change the character of uterine mucous and make the environment less suitable for implantation. Conception could occur but shed because it would not implant.
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7

Yes:
Plan B can work in one of three ways depending on where you are in your cycle. It can prevent or delay ovulation, can interfere with the fertilization of the egg or may prevent implantation by altering the lining of the uterus. If you take Plan B One-Step within 24 hours, it is about 95% effective.
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11

No:
Not for sure because you never know if you have ovulated or not. If you have already ovulated then it might not work but if you have not ovulated then there is a good chance it will. For the future try to use birth control prior as it sure is most reliable!
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12

No - implantation:
The morning after pill prevents implantation by changing the hormone levels in the blood and thus in the uterine lining. The uterine lining (endometrium) must be ideal for the embryo to implant. Hormone pills (morning after and bcp) change the hormone levels that make the lining hostile to implantation. Hope this helps, best wishes.
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13

Maybe:
It is unclear from your question whether you are taking it before or after intercourse. It is not meant for routine contraceptive use which is why it is called emergency contraception. It is meant for use after an unexpected failure of contraception and is 95% effective if taken within 24 hr. After intercourse even at mid-cycle. This is less than the effectiveness of other contraceptives. Be safe!
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15

Take a test:
Anyone having intercourse without birth control or condoms may get pregnant. If intercourse was within 72 hours you consider taking plan b. Ella (ulipristal acetate) is another brand that can be used up to 5 days after unprotected intercourse. Plan b is a high dose of birth control to disrupt the hormonal patterns to delay or prevent ovulation. Abnormal bleeding after is common. Check preg test in 10 days.
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16

Yes, it can be used:
At any time during your menstrual cycle. Plan b one-step can reduce your risk of pregnancy by up to 95% if used within 24 hours of sex. According to planned parenthood when Plan B is taken 48 to 72 hours after intercourse the efficacy is 61%.
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20

Should be:
The morning after pill is effective up to 72 hours after intercourse. It prevents implantation of a potentially fertilized egg into the uterine wall. The sooner after intercourse the higher the chances of preventing pregnancy.
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25

Difficult to say:
It won't necessarily do anything to your cycle, but many women do find their next period to be a bit off after using Plan B. That can mean unusually light, perhaps a little early, perhaps a little late, maybe spotting for a day then it stops then comes back after a day. Everyone is different, but you should assume yourself to be as fertile as always going forward. Usually the 2nd period is normal
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26

Yes. It can be used:
At any time during the menstrual cycle. Plan b one-step can reduce your risk of pregnancy by up to 95% if used within 24 hours of sex. According to planned parenthood when Plan B is taken 48 to 72 hours after intercourse the efficacy is 61%.
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27

"Up to 89%":
Information about the effectiveness of the Morning-After Pill or Plan B One-Step is that the progestin/levonogestrel pills are up to 89% effective when taken within 72 hours of unprotected sex, even at time of ovulation. Some effectiveness remains up to 120 hours after. Please pursue more reliable methods of regular contraception; Morning-after pill should rarely be taken. Good wishes!
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30

Yes:
A morning-after pill taken the day after sex is very effective in preventing pregnancy. It is about 95% effective, which translates to: if 100 women take the pill the day after sex, about 5 women get pregnant, and 95 will not get pregnant from that sex. The morning-after pill works less well on days 3, 4, or 5 after sex. One can do a urine pregnancy test 3 weeks after sex to verify non-pregnancy.
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Emergency contraception is a method to prevent pregnancy in women who have had unprotected sex, or for whom a barrier method has failed (slipped condom, diaphragm, or cervical cap, or broken condom). Emergency contraception medicine is not the same as the "abortion pill."
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